INGREDIENTS
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1 1/2 cups flour
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1 teaspoon baking soda
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1 teaspoon baking powder
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1/2 teaspoon salt
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3 large ripe bananas, mashed
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3/4 cup sugar
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1 egg, lightly beaten
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1/3 cup butter, melted
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1/3 cup packed brown sugar
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1 tablespoon flour
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1/8 teaspoon cinnamon, to taste
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1 tablespoon cold butter
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1/4 cup nuts, chopped (optional)